The MINER A Operations Report All Experimenters Meeting Howard Budd, University of Rochester Jun 20, 2011

2 Data ×10 13 POT/pulse for targetLimit 2.5×10 13 POT/pulse for target Started up in LE250 HE mode, ×10 19 POT as of Jun 19. –We have taken 0.72×10 19 POT as of Jun ×10 19 POT92.3% live from Apr 22 – Apr 28, 0.335×10 19 POT –However, the inefficiency Jun 16 – Processing problem which is recoverable. –MINOS live time is about 98% to Jun 19 Tomorrow, Jun 21, the plan is to move target to LE10 FHCTomorrow, Jun 21, the plan is to move target to LE10 FHC % live time Apr 22 – Apr 28

He Leak The He leak has increased to about 13 l/min. This leak does not appear to affect the cooling of the target as the He appears to be escaping into the chase rather than the water Target scan appears to be fine, so there is no indication of a water leak 3

MINER A POT/Day Nov Present 4 x

5 Accumulated POT to Jun 16 Anti- run, full scale corresponds to 1.76×10 20 POT –# POT for collected for anti- before Mar 23 10, official start of MINER A run Minerva run, full scale corresponds to 4.9×10 20 POT – # for which MINERvA project & experiment were reviewed & the detector built. Projected assumes 0.92×10 18 POT/day and adding the limit of 2.5×10 12 POT/pulse to Sep plus 2 week shutdown in Aug 2011 to change target –# POTs – average over the uptime during the past 1.5 years –Actual run plan not yet determined, this is one possible scenario

NuMI Beam Plots 6

Protons for the Week 7

FY2011 Protons 8

NuMI Protons over History 9